# list1 = [1,2,2,1,3,]
# list2 = list(set(list1))
# def func():
#     for i in list2:
#         c=0
#         for j in list1:
#             if i== j :
#                 c+=1
#         if c == 1:
#                 return i
# print(func())

import time
# a = time.time()
# list = []
# for i in range(1,10000001):
#     list.append(i)
# b = time.time()
# print(b-a)

a1 = time.time()
list2 =[i for i in range(1,10000001)]
b1 = time.time()
print(b1-a1)